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[texts]73 Magazine (May 1982)
73 Magazine May 1982 (#260) Pacific Odyssey - the Kingman/Palmyra adventure ...... KB7NW 12 Top-Notch for Top Band - super antennas for 160 ...... N3BEK 26 The Fun-Amp - 20 Watts out ...... WA0RBR 32 The CCD Antenna Revisited - does it measure up on 40m? ...... W4ANL 40 Antenna-Raising: The Good-Neighbor Policy - sidestepping civil war ...... AK5Q/4 42 'Lite Receiver IV - part I: building it is a breeze ........
Keywords: antenna; amateur; mhz; radio; magazine; tor; power; frequency; pth; amateur radio; power supply; toll free; radio club; money order; weather satellite; call toll; residents add
Downloads: 6,616 (2 reviews)
[texts]73 Magazine (April 1977)
73 Magazine April 1977 (#199) Shoot the Moon! ...... K3BPP 44 Frustrating The Thieves ...... WB0GGT 46 Automatic Autopatch Release ...... WA1RTD 52 Emergency 911 System ...... WA2RXQ 54 The Downspout Vertical ...... K8ANG 55 RTTY? What's That? ...... WA6CPP/WA7PEI 56 Do-It-Yourself Photosensitizing ...... KL7AE 57 Making Your Own PC Boards -Part II ...... Smith 58 Curing Mobile Noise Miseries ........
Keywords: amateur; radio; mhz; kit; antenna; power; meter; frequency; circuit; repeater; circuit board; amateur radio; power supply; barrel kit; front panel; qso party; radio club; ham radio; master charge; kit includes
Downloads: 4,715 2.00 out of 5 stars2.00 out of 5 stars(1 review)
[texts]73 Magazine (December 2002)
73 Magazine December 2002 (#505) Commercial-Quality Function Generator - Will you outlive it -or vice versa? ...... K8IHO 10 Shedding Some Light on Dimmers - Why not put one of these triacs to use? ...... W2GOM/7 22 Eager for Meager - Try an 11m vertical on 160 ...... AD1B 24 Shack Switch for Foot Fetishists - Not that it's That kinky ...... WA2OKZ 27 Ashore at Sacrifice Rock! - The saga of a masterful DXpedition ........
Keywords: radio; frequency; amateur; antenna; mhz; ihe; thai; cap; december; amateur radio; radio today; web site; time base; radio book; book shop; ham radio; power supply; cal res; three boats
Downloads: 10,219 5.00 out of 5 stars5.00 out of 5 stars5.00 out of 5 stars5.00 out of 5 stars5.00 out of 5 stars(1 review)
[texts]73 Magazine (April 1997)
73 Magazine April 1997 (#439) The Hale-Bopp Comet and Its Controversial Tale - Buiid the Cosmic Crystal Set and Listen in! ...... WA8YKN 10 TV/VCR Tuner Applications - The first of a three part series ...... W6WTU 18 Build a Colloidal Silver Generator - Do-it-yourself has always been at the heart of hamdom ...... WA8YKN 21 An 8088 Clock Upgrade - Recycle ...... Davis, W7RXV 27 The California Phased Array - Easy to build, easy so use-and even easier on the billfold ........
Keywords: antenna; amateur; radio; ihe; power; ham; qrp; signal; transmitter; amateur radio; radio today; morse code; ham radio; colloidal silver; power supply; power density; feedback card
Downloads: 2,244
[texts]73 Magazine (November 2002)
73 Magazine November 2002 (#504) Your Turn for a Coil Winder - The Gingery Universal Coil Winder can be an easy and handy addition to your bench ...... K8ZOA 10 Multiple CW Filters - Here are some clear descriptions and examples of how you can set up an active audio filter ...... W2GOM/7 16 Automotive Battery Voltage Monitor - Interesting to analyze, simple to build ...... KC5MFY 20 Travels with Henryk -Part 9 - CQ de Havana ........
Keywords: radio; amateur; antenna; ham; wire; power; frequency; ihe; amateur radio; voltage; radio today; ham radio; web site; power supply; slot antenna; wire guide; coil winder; book shop; extra class
Downloads: 2,696
[texts]73 Magazine (November 2000)
73 Magazine November 2000 (#480) Build This IP3 Test Set - A receiver's third order input intercept point is more than just a mouthful ...... N2DCH 10 Inside Digital TV/VCR Tuners - Part 3: Data receiver for testing ...... W6WTU 16 A BFO for Your SW Rx - With a $10 Ten-Tec kit ...... W4PGI 22 Super-Simple 80m Fox - Build this easy and inexpensive QRP rig, perfect for dual-band foxboxes ...... K0OV 24 You Can Build the FoxFinder 80! - Here's how to get started in the exciting world of 3.5 MHz ARD...
Keywords: radio; receiver; antenna; amateur; ihe; signal; circuit; kit; khz; output; amateur radio; radio today; web site; power supply; ham radio; circuit board; sense antenna; radio book; high power; gain control
Downloads: 2,673
[texts]73 Magazine (March 1985)
73 Magazine March 1985 (#294) TVRO Trivia - To those would-be satellite enthusiasts wondering which way is "up," W6SMJ offers the comfort of his years of experience in home satellite TV reception ...... W6SMJ 14 All This and PCII! - Would you like a fully-programmable Morse keyboard that will balance your checkbook and play Sousa marches? Then read on! ...... W4FXI 26 Do Volunteer Examiners Work? -A 73 Special Report - National VEC W5YI says yes...
Keywords: radio; amateur; amateurs; mhz; antenna; repeater; fcc; ham; tor; radio amateurs; amateur radio; utc march; smart patch; ham radio; radio club; power supply; flea market; signal generator
Downloads: 2,219
[texts]73 Magazine (May 1974)
73 Magazine May 1974 (#164) ICs Upgrade the CD Ignition System - A B+ article ...... W1KNI 17 Adding dBs to the Audio Compresser - Expanding upon new ideas ...... W2EEY 21 Finding a New Home for the Mobile Rig - Some hams will go to any lengths ...... WA8QNR 27 Interference Suppression for Amateur Boat Owners - Let us not forget our Maritime Mobile friends ...... DL5KS 31 Heath HW-202 - Review of a very popular rig ........
Keywords: frequency; amateur; antenna; circuit; mhz; audio; repeater; output; voltage; amp; amateur radio; current limiting; limiting resistors; power supply; voltage regulator; slow scan; frequency response; study guide; dip dip; left decimal
Downloads: 1,795
[texts]73 Magazine (December 1974)
73 Magazine December 1974 (#171) Making Nicads Behave ...... K2OAW 24 Zillions of Parts For Nothing ...... WB9MQY 36 C31 or Bust! ...... DK8SQ 39 Wind Indicator For Your Shack ...... W5ZG 41 Modified Weather Satellite ...... WB8DQT 48 A Logical Keyer? ...... K2QKO 53 The Perils of Novicehood ...... WA1SNG 58 Can FM Simplex Be Solved? ...... WA6CPP 65 Meters And Their Faces ...... W5IUR 70 Slow Scan Tape Secrets ........
Keywords: amateur; mhz; jan; voltage; meter; antenna; radio; sstv; oct; battery; amateur radio; wind velocity; power supply; slow scan; ham radio; address city; logic probe; tuned diode; test equipment; sstv monitor
Downloads: 3,457
[texts]73 Magazine (May 1988)
73 Magazine May 1988 (#332) Why Do Satellites? - More reasons than you can argue against ...... N5BF 11 UoSATS - Space science from Surrey ...... N5AHD 20 OSCAR History - Project OSCAR is nearly 30 years old ...... K6LFH 27 Hamsat Awards - Set your sights high ...... WB5RMA 30 Hard-Line Connector - A little work saves a Lot of money ...... W5PFG 32 Uncle Wayne's Ham Shack Winners - The happiest hams of the month ........
Keywords: amateur; radio; satellite; amateur radio; feedback card; mhz; repeater; oscar; frequency; antenna; ham radio; project oscar; power supply; front panel; ten tec; atv repeater
Downloads: 2,182
[texts]73 Magazine (September 1995)
73 Magazine September 1995 (#420) Simple J-Type 10m Vertical - For more versatile DXing ...... W6IOJ 10 Tuner Helper - An easier (and safer) way to tune your antenna while driving ...... K3PUR 14 Just Another Loop Antenna - Or is it? ...... WB2EGQ 20 A Discone Antenna for 10 Meters - It looks like a bird cage, but works like a yagi ...... W1ZB/6 32 Check Your SWR Bridge - Think you have a good bridge? Find out for sure ........
Keywords: antenna; radio; amateur; frequency; receiver; power; ham; mhz; radio today; amateur radio; feedback card; case set; ham radio; tuner helper; current distribution; matching case
Downloads: 2,129
[texts]73 Magazine (February 2003)
73 Magazine February 2003 (#507) Cheap & Easy Portable HF Vertical - Try this medium-weight, sturdy, neat, visually pleasing, fun to use ...... K8MKB 10 Troubleshooting Computer Power Supplies - Rule # 1: Be careful ...... W6WTU 14 Build This Simple SMT Station - Dinner and a movie? How about pizza and a project? ...... AA2JZ 23 How's That Thing Really Work, Anyway? - Part 1: Receivers ...... AA2JZ 25 Warblemania - and other QRP afflictions ........
Keywords: radio; amateur; antenna; power; mhz; voltage; frequency; laser; amateur radio; radio today; power supply; computer power; switching power; power supplies; web site; beam expander; ball lens; ham radio
Downloads: 2,290
[texts]73 Magazine (April 1986)
73 Magazine April 1986 (#307) The Dayton Hamvention '86 - The center of the ham radio universe ...... WA4BPI 20 Your Bridge Over Troubled Antenna Tuning - Is your antenna less than ideal? Put more fire in the wire ...... W3MT 24 Stretch the GP Antenna to the Max - This, the simplest of all antennas, has much to recommend it ...... GW3SB/G3SB 27 The Care and Feeding of a Curved Linear Array Antenna System - For low cost, very low maintenance, yet acceptable performance, try this antenna system fo...
Keywords: antenna; radio; amateur; mhz; amateurs; print; ham; output; input; radio amateurs; amateur radio; power supply; flea market; maximum power; vee beam; print print; ham radio; packet radio; list price
Downloads: 2,095
[texts]73 Magazine (May 1985)
73 Magazine May 1985 (#296) Discover the Discone - Is this the perfect aerial? Consider simple wire constrcution, easy one-time tuning, and flat swr from 3.5 to 28 MHz ...... W1GV/4 17 Two for Two - We respectfully offer a pair of radiators for the two-meter band so elegant, yet so simple, that you will kick yourself for not thinking of them first ...... WA4BLC 22 The Snake with LED Eyes - A tall tale from the Antlers- wherethe decoration is strange and the stories are even stranger ........
Keywords: antenna; radio; amateur; amateurs; tor; swr; mhz; hams; antennas; radio amateurs; amateur radio; power supply; antenna tuner; smart patch; radio club; general coverage; norfolk island; base station; ham radio
Downloads: 2,250
[texts]73 Magazine (November 1987)
73 Magazine November 1987 (#326) Tesla High-Frequency Transformer - Build this spark-excited. trans former and create your own lightning ...... VE7JON 12 Signal Strength Reporting - Read this and know what you mean when you say "S-9, OM" ...... W2OZH 15 Holiday Buyer's Guide - A cornucopia of shopping tips ...... Staff 20 Cubic Inch Keyer - Iambic keying on the HW-8 ...... WB2EMS 32 Repeater Controller PC Board - Repeater on the fritz? Build this inexpensive repeater board and get right back on ...
Keywords: amateur; radio; repeater; antenna; mhz; ham; frequency; antennas; amateur radio; ham radio; repeater controller; card number; power supply; signal strength; front panel
Downloads: 2,299
[texts]73 Magazine (May 1964)
73 Magazine May 1964 (#44) Flying Noise Lock ...... K2TKN 6 Matching VHF Antennas ...... K5JKX 12 Where Have Our Bands Gone? ...... W2DUD 16 The Quad-Quad - for two ...... W8HHS 20 Class D Amplifier - introducing a new type of audio circuit for transistors ...... K5JKX 26 12 Volts from 6 ...... K6BIJ 32 Single Tube Oscillator-Multiplier ...... K5JKX 34 SSB, DSB, AM, etc. ...... K6HJH 36 Inboard Calibrator for the NCX-3 ........
Keywords: amateur; antenna; power; receiver; frequency; transmitter; arrl; output; circuit; watts; amateur radio; power supply; square wave; shorting bar; average power; weak signal; sine wave; incentive licensing; heavy duty; power supplies
Downloads: 2,489
[texts]73 Magazine (June 1996)
73 Magazine June 1996 (#429) The Discharger - A NiCd nurse you really should build ...... K4GOK 10 Wheelchair Mobile - Dave Skinner KC5NLK operates from his wheelchair ...... WD5BIV 20 Upgrading Your Transmatch - Make your buddies sick with envy by adding a Ten-Toc tuning bridge ...... KJ7FX 22 Foxhunting Deluxe - A compact antenna switching unit for Doppler DF ...... K4CHE 28 The 2 Meter Diamond Beam - It could be a real gem in the rough ........
Keywords: radio; antenna; amateur; ihe; voltage; power; circuit; meter; ham; amateur radio; radio today; battery pack; field day; simplex repeater; power supply; ham radio; red led
Downloads: 2,251
[texts]73 Magazine (February 1987)
73 Magazine February 1987 (#317) Secrets of Silent Switching - It's time to say farewell to chattering, sticky relays ...... OA4KO/YV5 28 PC Infernos - Ah, the sweet smell of flaming phenolic! Before you throw out that burned PC board, consider doing a little micro surgery ...... WB4YOD 32 Shoestring Software - Forty-five baud on a budget: This amazingly simple software will boot your Commodore up on RTTY in under an hour ........
Keywords: amateur; radio; mhz; antenna; signal; ham; repeater; frequency; receiver; amateur radio; feedback card; power supply; ham radio; tuning indicator; packet radio; antenna tuner; morse code
Downloads: 2,330
[texts]73 Magazine (November 1991)
73 Magazine November 1991 (#374) Voice ID on a Chip - Throw your voice with this versatile Circuit ...... WB8ELK 11 Portable Frequency Counters - Versatile test equipment that you can really count on ...... WB6NOA 15 Half-Wave Gain Antenna - For 450 MHz handie talkies ...... AD5X 26 The Heli-Hat Antenna - An 18-inch wonder for 10-17 meters ...... KB4ZGC 32 Showdown in Portland - Discover the thrill of radiosporting ........
Keywords: antenna; radio; mhz; amateur; repeater; frequency; audio; ham; ihe; amateur radio; radio today; ham radio; feedback card; call call; audio board; power supplies; power supply
Downloads: 2,204
[texts]73 Magazine (April 2000)
73 Magazine April 2000 (#473) Morse Code -The Once and Future Mode - Will you outlive it -or vice versa? ...... N1FN 10 The Long-Lost Art of Conversational CW - Banging away for long chats can be fun -if you know what to say ...... WF6P 18 Make Copies of This Article - Then drop them off at your local school(s) ...... W8DYF 20 The Finger - Here's a positive way to respond when someone gives it to you ........
Keywords: radio; amateur; antenna; morse; april; ham; kit; mhz; ardf; amateur radio; radio today; morse code; ham radio; web site; high power; heavy duty; radio book; book shop
Downloads: 2,528
[texts]73 Magazine (November 1974)
73 Magazine November 1974 (#170) Dipole Antenna Tuning ...... WA4RSX 20 Latest Counter Update ...... K2OAW 26 Who Needs A 5V Supply? ...... WA0ABI 36 How To Win A Big Contest ...... VK4SS 37 Digital Wind Direction Indicator ...... W2AOO 40 Build A 2M Frequency Synthesizer ...... W8KBC 44 Experiment in Terror ...... WA9VLK 66 A Wind-Proof 20M Beam ...... VE7DKR 67 Tones and How to Touch Them ...... K1NUN 71 The Double Stub Matching System ......WA6CPP 73 How You Can Teach Novices ........
Keywords: frequency; output; pin; mhz; input; circuit; amateur; meter; voltage; power; power supply; amateur radio; front panel; touch tone; slow scan; dip dip; boom length; beam gain; residents add; printed circuit
Downloads: 2,145
[texts]73 Magazine (April 1973)
73 Magazine April 1973 (#151) Low Cost FM Deviation Meter - Lest you deviate from the path of righteousness ...... W9HD 21 Taming Those Hot 500 MHz FETS for 2m FM - Shrews you what you can do ...... K1CLL 27 Two More Two Meter Amplifiers - Louder is better -right? ...... WB4DBB 31 "Mini" Repeater Control System - Part I - This is the mini -the maxi is a whole book ...... WA0ZHT/l 35 Getting Your Repeater Licensed - Difficult -but possible ........
Keywords: repeater; output; mhz; meter; transmitter; watts; power; logic; frequency; amateur; amateur radio; power supply; watts output; tone burst; power output; general electric; temporary license; power gain; transistor power; repeater control
Downloads: 1,969
[texts]73 Magazine (May 2003)
73 Magazine May 2003 (#510) Tunable Broadcast Band Filter - Another great project from K8ZOA ...... K8ZOA 10 How to Avoid a Disaster Disaster - And how about putting the field back in Field Day? ...... WB9YBM 22 Ready, Set... Don't Go? - The time for preparation to be a meaningful participant in the next emergency situation is before the event occurs ...... AA2JZ 23 'Quaker Oaths - In 1989, the ARS came through.....
Keywords: radio; amateur; power; tuning; coupling; inverter; frequency; ham; photo; amateur radio; radio today; main tuning; ham radio; web site; wouff hong; tuning capacitor; switching power; red cross; morse code
Downloads: 2,149
[texts]73 Magazine (November 1999)
73 Magazine November 1999 (#469) Need a UHF Dipper? - Part 2: Coupling to an outside environment ...... W6WTU 10 Planning a DXpedition - Here's what to do if you take Wayne's advice ...... W4DC 14 Why No Beta-Morse? - An amusing way to preserve your Morse code ...... VE2MHZ 18 Building a Better Collins - Add this $1 solid state replacement part to your 30S1 ...... W2CQM 19 Isotron Notes - Simple tips straight from the Hart ........
Keywords: radio; amateur; loop; antenna; power; mhz; kit; thai; battery; amateur radio; radio today; sense loop; feedback card; morse code; ham radio; high power; web site; spread spectrum
Downloads: 2,961
[texts]73 Magazine (February 1983)
73 Magazine February 1983 (#269) Unleash the TS-900 - A rig like this deserves more room than 2meters can give. Get on HF (including WARC bands) with this transverter ...... W4BF 10 Four-Tone Audio Oscillator: A Potent Troubleshooter - For any test that requires a tone, this oscillator does the job It can also be computer-controlled ...... W7BBX 20 Superman's Repeater Control System - This simple system offers four independent on/off outputs...
Keywords: amateur; antenna; radio; mhz; frequency; magazine; kit; output; receiver; amateur radio; power supply; ham radio; toll free; radio club; gmt february; qso party; frequency counter; front panel; money order
Downloads: 2,418
[texts]73 Magazine (February 1991)
73 Magazine February 1991 (#365) Radar Detector to Microwave Receiver Conversion - Listen on 10 GHz cheap ...... WA6EJO 10 UHF Source Dipper - The easy way to tune circuits from 400-500 MHz! ...... WB0ESV 20 UHF Field Strength Meter - For 400 to 500 MHz ...... WB0ESV 24 Future Modulation Amateur Television - Sometimes called frequency modulation ...... W9NTP 32 Take a West Indies DXpedition? - "No Problem, Mon!" ........
Keywords: amateur; radio; mhz; antenna; power; ham; frequency; atv; amateur radio; radio today; feedback card; power supply; ham radio; high power; radar detector; memory channels
Downloads: 2,080
[texts]73 Magazine (May 2002)
73 Magazine May 2002 (#498) Build This Commercial-Quality Counter - Part 1 of 2, amaze your friends, and yourself! ...... K8IHQ 10 How I Build "Modified Ugly" - Would you call this "Maul-style" construction? ...... AA2JZ 14 Unmasking the Long Ranger - Measure weak signals up to 56 MHz with this dBm meter range extender, kemosabe ...... N2DCH 18 Travels with Henryk -Part 4 - All ashore at Malta ........
Keywords: radio; amateur; mhz; frequency; ham; power; signal; meter; rig; amateur radio; radio today; ham radio; range extender; dbm meter; cold fusion; circuit board; web site; power station; radio book
Downloads: 2,326
[texts]73 Magazine (May 1986)
73 Magazine May 1986 (#308) Lousy Inconsiderate Dummies - Lids we love to hate ...... W2NSD/1 28 Speed-Charge Your PB-21 - Is your TH-21 spending more time on your desk than on your belt? ...... WA8IZV 32 Army Surplus CW - Revamp the CIA's secret CW sender ...... W8MFL, WL7AKZ 36 The Day the Aliens Landed in Limerick, Maine - The ultimate eyeball QSO ...... W1ROM 38 The Hula Hoop Loop Revisited - A new twist in deep-null receiving antennas ........
Keywords: radio; antenna; mhz; amateur; amateurs; ham; frequency; lid; voltage; radio amateurs; amateur radio; power supply; packet radio; sine wave; radio shack; trapezoidal wave; front panel; square wave; list price
Downloads: 2,211
[texts]73 Magazine (June 2001)
73 Magazine June 2001 (#487) EZ-Build Pre-Selector - Use a tuning cap from an old broadcast receiver ...... N2DCH 10 Bring Back the Magic! - Is this guy living in a dream world? You tell Us ...... G3LDI 20 Read All About It! - Part 7 of good stuff from The Hertaian Herald ...... K8JWR 24 The History of Ham Radio - Part 6: Across the Atlantic ...... W9CI, SK 28 Field Day 2000 with the Xerox ARC - Where every signal was -ahem! -easy to copy? ......W6WTU 32 Field Day Follies - Wherein some Yankee t...
Keywords: radio; amateur; antenna; ham; digital; frequency; satellite; june; photo; amateur radio; radio today; field day; web site; ham radio; morse code; radio book; book shop; omega sales; extra class
Downloads: 2,339
[texts]73 Magazine (October 1978)
73 Magazine October 1978 (#217) DXpeditioning - a "how to" guide ...... WA2VMS 26 VHF On Your Frequency Counter - an easy-to-build prescaler ...... WB0KLH 34 The KM1CC Story - hams celebrate Marconi's miracle ...... WA1JWD 38 Good News! - easy autoranging for your counter ...... Lassagne 44 Mighty Mods for the 820S - more power and convenience ...... K4FK, WA4KIL 48 Improving Heath's HT - a hall-dozen swell mods ........
Keywords: mhz; frequency; amateur; antenna; output; radio; meter; power; model; switch; amateur radio; power supply; front panel; toll free; radio club; watts pep; tufts radio; radio electronics; frequency range; residents add
Downloads: 3,034
[texts]73 Magazine (July 1962)
73 Magazine July 1962 (#22) The 420 MHz Band - Inside dope on this interesting band by real expert ...... W4HHK 6 Six Meter Nuvistor Converter - Designed to plug in Drake receiver, but will work with anything ...... K8NIC/5 12 VHF Construction - Heed well this article and you may save yourself a lot of misery ...... WA2INM 14 The Eico 720 on Six Meters - You just add a separate pi-net coupler and there you are ........
Keywords: frequency; meter; antenna; circuit; receiver; amateur; grid; power; oscillator; tlie; power supply; amateur net; grounded grid; crystal controlled; miles miles; noise figure; meter converter; diode mixer; watts pep; television set
Downloads: 1,937
[texts]73 Magazine (April 1979)
73 Magazine April 1979 (#223) A Speedy Spinner Mod - 5,000,000 Hz per minute ...... W2RZJ 40 A Variable Bandpass Active Filter - extremely simple design ...... W3KBM 42 What About an Active Antenna? - here's a look at one ...... W5JJ 44 Help for the Hearing-Impaired - don't miss another phone call ...... W4VRV 56 Try a Bi-Loop Antenna - gets you coming and going ...... W7CJB 58 Simple RTTY IDer - uses five ICs ........
Keywords: amateur; mhz; antenna; radio; power; frequency; kit; arrl; tion; amateur radio; power supply; toll free; ham radio; prt prt; call toll; time base; radio club; versa tuner; master charge
Downloads: 3,137
[texts]73 Magazine (February 1974)
73 Magazine February 1974 (#161) Understanding the Slow Scan Monitor - It's awfully simple ...really ...... K4TWJ 20 Integrated Circuit Audio Amplifiers - IC Audio Amplifiers Handbookette ...... Kenney 25 A Simple Sweep Generator for Monitor Scopes - Very, very simple ...... WA2HNJ 32 New Regulations (1938) - A dated article ...... K2PMM/F8 34 Quick 'n Easy 15 or 20 Meter Vertical - Using el cheapo TV masts ........
Keywords: circuit; voltage; output; frequency; antenna; mhz; power; audio; receiver; khz; power supply; slow scan; amateur radio; integrated circuit; circuit board; phase lock; audio amplifier; power output; swr bridge; residents add
Downloads: 2,388
[texts]73 Magazine (December 1995)
73 Magazine December 1995 (#423) A Portable Integrated 20 Meter SSB/CW QRP Ham Radio Station - A ten pound powerhouse ...... KB4ZGC 10 Nostalgia For The Future - High performance crystal radio utilizes a high-efficiency JFET detector and dual resonant circuits for superior performance ...... KC3ZQ 14 A Perspirational Message ...... W2NSD/1 17 Jan Mayen - A Special DXCC Country ...... AJ0N/LA6US 18 Key It! ........
Keywords: radio; amateur; antenna; ham; repeater; power; mhz; ihe; hams; amateur radio; radio today; ham radio; feedback card; power supply; antenna tuner; call sign; jan mayen
Downloads: 3,496
[texts]73 Magazine (October 1995)
73 Magazine October 1995 (#421) The QRP Delight - A full-featured antenna tuner with built-in SWR meter ...... AD5X 10 DDS Dream VFO - Yes, you can build your own synthesizer! ...... KD1JV 14 Portable Solar Electric Power Generator - The sun is free for the using ...... K4SYU 20 Armstrong Updated - A high-performance, regenerative short-wave receiver ...... KC3ZQ 26 Link it All! - Why settle for operation on just two bands? ........
Keywords: radio; amateur; ham; mhz; frequency; antenna; repeater; receiver; hams; amateur radio; radio today; ham radio; feedback card; case set; matching case; solar panel; mars base
Downloads: 3,137
[texts]73 Magazine (January 1968)
73 Magazine January 1968 (#88) IC Square-Wave Generator - Getting acquainted with Integrated Circuits ...... WA4ZQO 6 Tuning In on Bonadio's Satellites - Strange noises on the air ...... W2WLR 10 Sideband Filters - The least understood pert of sideband gear ...... WB2GYS 14 The Two Meter Groundplane as a Gain Antenna - Gain where the action is ...... K6MVH 18 RF Insertion Amplifier for Two Meters - More drive for the final ........
Keywords: diode; antenna; diodes; voltage; meter; amateur; frequency; receiver; circuit; ssb; amateur radio; power supply; diode handbook; silicon diodes; radio amateurs; dummy load; list price; phone patches; square wave; noise limiter
Downloads: 2,166
[texts]73 Magazine (August 1975)
73 Magazine August 1975 (#179) The Oscar Zapper ...... WB4VXP 12 Identalert C ...... K2PMA 22 Digital SWR Computer ...... K2OAW 25 RF Feedback, The Experimenter's Curse ...... K1CLL 36 Surveying the DVM Scene ...... W9KXJ 42 How About a Weather Satellite Monitor? ...... WB8DQT 45 The QRP Accu-Keyer ...... WA5KPG 58 Catenary Suspense ...... W1BNN 62 Copper Rip-Off ...... W7SHY/6 69 Better Results from those Sweep Tubes ........
Keywords: mhz; output; antenna; frequency; power; meter; input; khz; august; amateur; power supply; amateur radio; residents add; printed circuit; radio shack; qso party; aunt henna; circuit board; tucker electronics; meter resonator
Downloads: 2,988
[texts]73 Magazine (March 1999)
73 Magazine March 1999 (#462) The Pluck of the Irish - Was Wee Mac a leprechaun or a pirate-or both? ...... K9AZG 10 Transmitting Ferrite Loop for 80/160 - Thirty years of experimenting ...now it's your turn! ...... G2BZQ 14 Signals From the Ice: Now That's Really Cool! - Here's what happens when hams meet Alaska's Matanuska Glacier ...... KL7JR 20 Anti-Metric? - You already use it more than you think! ........
Keywords: radio; amateur; antenna; frequency; filter; metric; ferrite; ham; power; amateur radio; radio today; power supply; feedback card; ham radio; web site; straight key; metric system
Downloads: 2,247
[texts]73 Magazine (November 1970)
73 Magazine November 1970 (#122) Differential J-FET Pre-amplifier - Now hear stations before they come on the air! ...... W4KAE 16 Dual Gate MOSFET - Rendering single gaters obsolete? ...... WB2WYO 22 Remote Quad Tuning - From the shack ...... W6AJZ 27 Two-Watt Six-Meter Transmitter - Using the crystal- heterodyne VFO ...... KlCLL 30 Semiautomatic FM Channel Scanning - What, another FM article? Yup! ........
Keywords: circuit; amateur; frequency; impedance; receiver; radio; antenna; output; power; khz; amateur radio; wolf point; power supply; noise figure; magnetic field; local oscillator; impedance matching; power source; maximum power; ham cat
Downloads: 1,849
[texts]73 Magazine (April 1965)
73 Magazine April 1965 (#55) Europe on Two? - Get ready for Oscar III ...... W7SMC/6 3 Letter from Gus - Beginning 73's monthly letter from the DX King ...... W4BPD/AC5H 4 1 kW PEP - 811's in a small box ...... W9EWL/0 6 6 Meter Heterodyne VFO Transmitter - A simple, stable, easy-to-build transmitter from Bill ...... K1CLL 10 Kostless Keyer - Well, maybe not kostless, but klose to it ...... W8MQW 14 Double Hula - A small new antenna...
Keywords: meter; tlie; frequency; transceiver; ssb; antenna; crystal; receiver; amateur; power; power supply; front panel; amateur radio; electronic supply; west fond; sterman electronic; hula hoop; printed circuit; low noise; field strength
Downloads: 2,124
[texts]73 Magazine (November 1960)
73 Magazine November 1960 (#2) Transistorized 10 Meter Converter - Not only that, but it uses a printed circuit you can make ...... W3BUL 9 Four Band Crystal Converter - 20-15-10-6 meters using the new International Crystal converters ...... W3UZN 12 FM VFO Exciter - Butchered BC-459 for 6 and 2 meter FM or NFM operation ...... W1TUW 14 Mobile Power - How to put some beef into that mobile signal ........
Keywords: circuit; signal; receiver; amateur; meter; limiter; frequency; antenna; tube; ham; power supply; magazine november; peak limiter; amateur radio; true north; shunt peak; series peak; circuit board; noise limiter; audio signal
Downloads: 2,361
[texts]73 Magazine (April 1998)
73 Magazine April 1998 (#451) De-Noising your PC - Cure the transmitter in your PC ...... WA9PYH 11 Modifying Your Ramsey Transceiver Kit - One stop closer to the ultimate ham experience ...... N0BLX 18 Out of Sight, Out of Mind - Discretion is the better part of neighborhood amity. Part 2: Hardware ...... WB4BNU 20 Techno-Trouble for Know-It-Alls - How many of these 50 questions can you answer correctly? ........
Keywords: antenna; radio; amateur; voltage; mhz; frequency; output; loop; power; amateur radio; radio today; feedback card; power supply; output voltage; flea market; single point; web site
Downloads: 2,121
[texts]73 Magazine (July 1976)
73 Magazine July 1976 (#189) Handy Dandy Soldering Iron Cooler Offer ...... WB4FDQ 18 Perfect CW - drive 'em crazy with the Keycoder I ...... WA9VGS 20 The Mini-Mite All-band QRP Rig - runs a mighty seven Watts ...... WA7SCB 30 A Fun Counter Project - an invaluable test instrument for under $50? ...... Plavcan 36 Build a FAX from Scratch - then get satellite pictures and other things ...... W4NK 44 Der Repeatermeister - repeater control, with ID ........
Keywords: output; power; circuit; kit; antenna; mhz; clock; pin; amateur; frequency; power supply; amateur radio; flip flop; barrel nit; front panel; telephone calls; coast guard; radio club; barrel kit; matching network
Downloads: 2,601
[texts]73 Magazine (May 1995)
73 Magazine May 1995 (#416) Builder's Guide to the Universe - A beginner's guide to home-brewing ...... WB8VGE 10 Wart Remover - Build this easy module to eliminate unsightly wall parasites from your shack ...... WB8VGE 16 6 Meters-The In-Between Band - Excitement for all license classes ...... WB6NOA 34 A Foolproof Power Controller - Be prepared when the commercial power shuts off ...... KN4HL 40 K4SYU Loop Antenna - A compact, portable HF solution ........
Keywords: radio; ihe; amateur; antenna; mhz; meter; power; noise; ham; swr; amateur radio; radio today; power supply; ham radio; feedback card; case set; swr meter; noise reduction
Downloads: 2,691
[texts]73 Magazine (December 1960)
73 Magazine December 1960 (#3) Transistorized 220 MHz Converter - Crystal controlled too ...... W3HIX 8 RF Sniffer - Snooper sensitive RF detector which you will build ...... K5JKX/6 11 SSB Dynamic Demonstrator - Teaching SSB calls for some tricky stratagems ...... W2UQB 12 Capacity Meter - Two ranges : 0-40 pF (resolves 1 pF) and 0-900 pF ...... K8ERV 14 Station Control System - Even if you don't build this one it will give you ideas ........
Keywords: circuit; relay; voltage; frequency; receiver; squelch; oscillator; signal; meter; transistor; power supply; noise figure; positive voltage; delay relay; mmfd ceramic; amateur radio; squelch control; short wave; pickup loop; plate current
Downloads: 3,376
[texts]73 Magazine (December 1982)
73 Magazine December 1982 (#267) The Hangman's 2-Meter Collinear - Make your tower do double duty. Drop this array from the top and get 6-dB gain ...... W1GV/4 10 Deep-Six Squelch Tails - Kerchunks take a dive with the addition of this audio delay ...... WA2NYE 14 Build Yourself A Paralyzed Beam - Go from east to west In less than a second with this 2-meter array. And put your rotator out to pasture ........
Keywords: antenna; mhz; frequency; amateur; power; radio; audio; receiver; rtty; magazine; power supply; amateur radio; toll free; front panel; ham radio; squelch tail; morse code; residents add
Downloads: 3,790
[texts]73 Magazine (September 1964)
73 Magazine September 1964 (#48) Linears for the Two'er ...... K1CLL 6 Linear for the Sixer ...... K1CLL 11 Portable Six Meter Station ...... W1OOP 16 Now That You Ask Me ...... W7IDF 29 More on the 6DQ5 ...... K5JKX 32 SJS Receiver ...... K5JKX 34 Another Antenna of Note ...... W2RWJ 40 Tuned Line Tank Circuits ...... WA4EPY 42 Six the Easy Way ......WA9CZQ 50 Simple Squelch ...... K5JKX 53 Souping the TCS ........
Keywords: tlie; meter; receiver; voltage; frequency; capacitor; power; tuning; circuit; antenna; power supply; shorting bar; citizens radio; tuning capacitor; screen voltage; lbs lbs; amateur radio; ten meter; electrical center; power output
Downloads: 2,065
[texts]73 Magazine (November 1981)
73 Magazine November 1981 (#254) The Satellite TV Challenge - 73 magazine's answer ...... N8RK 14 Space Spinoffs for Amateur Radio - the makings of a communications revolution ...... WA1DCP, W2IKQ 18 How Big A Dish? - Satellite central, part 1 ...... Gibson 20 Satellite Channel Guide - Part 1 ...... WESTSAT 24 Satellite TV Receivers - is there a better way? ...... K4TWJ 26 Spread Spectrum - a report from AMRAD ........
Keywords: antenna; frequency; amateur; mhz; radio; magazine; power; receiver; output; signal; amateur radio; power supply; hewlett packard; packard hewlett; toll free; ham radio; directional coupler; call toll; radio rsa; front panel
Downloads: 3,320
[texts]73 Magazine (October 1981)
73 Magazine October 1981 (#253) Contesting from VP5 - the other end of the pileup and how to get there ...... WB8BTH 12 In Profile: Ted Gamlin, A Contester ...... KA1D 18 Review: The Kenwood TS-530s HF Transceiver - sophisticated performance at a not-so-sophisticated price ...... KA1LR 26 Folded Unipole for 160 - Top-banders, take notice! Here's a top-loaded radiator with the government's seal of approval ........
Keywords: mhz; contest; magazine; radio; amateur; frequency; antenna; power; ham; amateur radio; power supply; ham radio; hewlett packard; toll free; packard hewlett; sale price; qso party; frequency range; solar flux
Downloads: 3,212
[texts]73 Magazine (December 1989)
73 Magazine December 1989 (#351) VOX for HTs - No-hands hand-held hamming ...... KA8HML 9 Two Meter Mobile Rig - Sick of anemic HT mobile operation? Pep up your handie with this booster ...... N8KDD 22 Poor Boy Satellite Station - Coat hanger + SO-239 connector = Mode A uplink antenna! ...... N5LKJ 24 Color SSTV for the Atari ST, Part I -Fast and easy way to get on this fascinating mode ...... WB2OSZ 38 Yaesu FT-470 2m/70cm HT - Two meters and 70cm in a micro-sized hand-held ........
Keywords: amateur; radio; antenna; ham; mhz; repeater; frequency; yaesu; band; amateur radio; feedback card; power supply; ham radio; front panel; dual band; watts output; packet radio
Downloads: 2,931
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